Air gun



.Fume i2, H923.

B. W. PUNCHES AIR GUN Filed Feb. 6, 1922 Patented June l2, l923 UlvllTEl@ BERT WPUNCHES, OF PLYMQUTH, MICHGN.

AIR

GUN.

To all lw/om if may conoci/vt:

Be it known that l, tiene. lll. FUNCHns, a citizen of the United States of America, residing` at Plymouth, in the county of layne and State of lilichigai'i, have invented certain new and useful lmprovenients in Air Guns, of which the following is a specifica-` tion, reference being had therein to the accompanying drawings.

The invent-ion relates to air guns and has for its object the provision of a simple construction of gun whichinay be inanuifactured at a relatively low cost and which is efficient in operation. @ther objects of the invention are to provide a gun in wl'iich the true barrel is secured to the plunger and has an aperture near its inner end for the passage of air compressed l by t1 .e movement of tne plunger toward the abutmentg to provide means within the true barrel for holding the projectile to its seat in the true barrel, which means permits of the insertion of the projectile when the true barrel` is in loading position; to provide a guide within the fals barrel for the forward end of the truebarrel which is adapted to receive a projectile other'than the ordinary projectile insertable within the true barrel; to makel this guide longitudinally adjustable relative to the true barrel to permit of the insertion of the projectiles passing through the guide into the magazine space between the false and true barrels; and to provide an inclined annular deflector within the false barrel' and surrounding the true ybarrel for guiding the projectiles within the magazine space to the aperture in the true barrel, when in loading p'osition.

`With these objects in view, 'the invention resides in the novel features of construction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings:

Figure l is a horizontal section partly in plan through a portion of an air gun embodying my invention and showing the plungel1 in retracted position;

Figure 2 is a similar view showing the plunger in its forward position of travel;

Figure 3 is a cross section taken at right angles to Figure l;

Figure l is a cross section partly in elcvation taken at right angles to Figure 2;

Figure 5 is a perspective view of the forward end of the gun showing the guide for the true barreL rlhe true barrel 2 is iiiredly secured to the i plunger 3 and slidably engages the abutment 5 as well the guide (i within the forward end of the false barrel. ln the present instance, the true barrel is secured to the plunger by .means of the reduced end of the plunger stein 7 threadedly the rear end of the true barrel. he plunger head 8 is clamped against the shoulder 9 formed upon the stem by means of the struck out lugs lO of the true barrel, the arrangement being such that the openings ll formed by striking out the lugs permit of the passage of the air compressed between the plunger head 8 and the abutment 5 into the true barrel to eject the projectile l2 within the true barrel. rlhe true barrel has the projectile aperture 18 formed in its upper side and locatedforward of the side openings ll, this aperture being so located that when the plunger head is'in engagement with or adjacent to the abutment, it will be located in advance of the abutment as shown particularly in Figures 2 and l so that a new projectile may be allowed to pass through the aperture into the'true barrel. The true barrel also has an annular shoulder 14 in advance ofthe projectile aperture 13, the diameter of this shoulder being such that the projectile will have a good sliding fit therewith, and forni an air tight seal.

To hold the projectile in frictional engagement with this very slight annular shoulder, there is the coil spring l5 within the rear end of the true barrel and having its rear end abut the forward end of the plunger stem, and its farthest advanced portion abut the projectile. However, to retract the farthest advanced portion of this coil spring to clear the aperture 13 when in loading position7 the coil spring has the straight portion extending rearwardly through the convolutions from the farthest advanced portion and a transversely extending end portion 16 which passes through one of the side apertures ll so that` it will engage the rear Vof the abutment when the true barrel is in y loa-ding` position.

` has been retracted sutlicientlv to permit Ithe As soon as the plunger coil spring; to expand, the lat-'ter yieldably forces the projecUile into frictionai. engemment -withits seat.

With the construction as thus far described and with the parts in the positions .shown kin Figure 2, theprojectile aperture 'barrel-ftoform an air tight seal.

A13 is located in advance of the abutment 5 yand the farthest advanced portion ofthe 4coil spring 15 is retracted to uncover this aperture so that a projectile within the space between the true and false barrels and in j advance of the abutmentmay .enter the aperture. Then upon retracting-the plunger with the true barrelj the coil spring 15 is permitted ztoexpand so that its farthest advanced portion engages the projectile and yieldably forces it' into frictional engagement with the restricted portion of the true in the retractedposition of the plunger as shown vin Figure 1, the coil spring f1 is compressed so that upon release of the trigger mech! anisin of vthe gun, this coil spring forces the plunger forward. which compresses the air trapped `in vthesp'ace lbetween the false and true barrels yand the abutment and plunger head until the pressure of this air is suflioient to eject the projectile from the true barrel. this air-'entering the true barrel through the side Aapertures and projectile aperture of the true barrel. near its rear end; YAs the plunger comes into proximity to the abutment, the projectile seating coil spring is compressed and its farthest advanced end is retracted to permit of the insertion :of the next projectile into the'true barrel. i

The space 17 between the false barrel 1. and true barrel 2 and in advance of the abutment 5. is the magazine of the guna and in order to load this magazine with the prof jectiles, the guide `6 for the forward end' of the true. barrel is longitudinally adjustable relative to both the false and, true barrels. This guidehas at its rear end and in its lower side, an opening 18 which is covered at all timeshy the true barrel when the guide is in its normal position. To uncover this opening, the plunger and true barrel are drawn back to retracted positiom and ther tduide is then advanced to its forward position as indicated. bv the dottedv lines, at which time the aperture is in advance of the forward end of the true barrel so that pro-- jetileS inserted into the guide majT pass through the aperture and into the magazine elf;` the gun The upper endy wall of the ialse barrel...ilA the L`shaped slot 19 .Which spring 21'secured. at its forward end to the false barrel and at its rear end to the-down-y l wardly extending` flange 22 of thev guide.

rthis spring;7 howeveri permits of rotationol the guide relative to the false barrel and then of longitudinal outward movement of the guide relative to the false barrel to effect the loading' of the magazine 1 To obstruct the forward endgoffthe true y barrel i?. when the guide G is positioned rclative to the t ne barrel to effect the loading: of thev magazine, ythere is the spring 23 upon the upper inner wall of the guide which will extend across the forward end of the true barrel 'when Athe guide hasv been advanced to a position to load the magazine.

To direct the projectiles within the magezine 1? to the projectile aperture 13 when the true barrel is in loading position'a there is the annular' detlector 24 within thefalse barrel and surrounding the true barrel'. this deflector being upwardly and rearwardly inclined and having;`r` anopening 25. in its portion above the true barrel which registers with the trough 26. the rear end of the trough terminating` justin advance of the projectile aperture and thereabove.4 The trough is carried by this inclined deflector,

This gun is .adapted for use with other jirojectilessuch" as arrows, etc., these projecti'les being adapted `to be vinserted within the guide 6. and to abut the forward end of the true barrel in retracted positionif deaired.y They lalso maj7 be' formed with plungers insertable within the true barrel to thereby secure a stronger impetus fromthe air compressed by the forward movement of the plun ger.

compression vcha-mberr of a plunger slidable l thcrewithin, and a truebarrel scour-cul to said plunger audfprevided with apertures near its inner enti upon diametricallv oppo` site sides thereof for the passage of air compressed in said chamber in an air `gun,` the combination Vwith a compression chamber. of aplunnerslidable therewithin. ande-a true barrel secured to said plunger and provided with an aper` y ture near its inner endjiior the passage'of vthe air compresse-,dun said chamber and a' second aperture for the insertion of the prov jectile into the true barrel. y

.ln an air gun? the combination with a compression chamber having an abutment, of a plunger slidable Within said chamber and movable, toward said plunger to compress air, a true barrel slidably engaging said abutment and secured to said plunger, said true barrel being provided with any aperture near its inner end adapted for the passage of compressed air on one side of said abutment and having a second aperture adapted for the insertion of a projectile into said true barrel on the other side olf said abutment, and means Within said true barrel and adapted to engage the projectile after its insertion for holding said projectile in a predetermined position,

l. In an air gun, the combination With a compression chamber having an abutment, of a'plunger slidable Within said chamber and movable toward said abutment, a' true barrel slidably engaging said abutment and secured to said plunger, said true barrel being provided with an vaperture for the passage of compressed air and a second passage for the insertion of a proj ectilethereinto, said true barrel also lbeing provided with a seat for the projectile beyond the first mentioned aperture, and a longitudinally movable yieldable member permitting oit the insertion of said projectile into said true barrel, but being adapted to enga-ge said projectile to force the same to its sea-t upon movement of the plunger away from said abutment` 5. In an air gun,` the combination'vvith a plunger comprising a stem having a shoulder at its outer end, and ya head clamped against said shoulder, of a true barrel secured to said stem and having` a struck out lug for clamping said head against said shoulder.

6. In an air gun, the combination With a compression lchamber having an abutment, of a plunger slidable Within said chamber comprising a stem having a shoulder at its outer end, and a head clamped against said shoulder', and a true barrel slidably engaging said abutment and secured to said stem, said true barrel having a struck out lug near its inner end Jfor clamping said head against said shoulder` the aperture formed by stamping out said lug constituting a passage for air compressed in said chamber into said true barrel.

7. In an air gun, the combination with a false barrel and a true barrel, of a member Within said false barrel for positioning the forward end of said true barrel, said member being provided With an aperture normally closed by said true barrel but adapted to be exposed beyond the end oi said true barrel for the insertion of a projectile through said member and into the space between said false and true barrels.

8. ln an air gun, the combination With a false barrel and a true barrel longitudnally sldably mounted therewithn, of

a guide for ythe forward end of. said true barrel, said guide being movable longitudinally relative' to said false and true barrels and having an aperture normally closed by said true barrel but adapted to be exposed yupon adjustment o't'said guide whereby a projectile may be inserted through said guide and linto the space between said false anud true barrels.

9. ln an air gun, the combination with a 'false barrel and a true barrel, a member Within said false barrel for positioning the outer end ot said true barrel, said member havingv anaperture therein normally covered by said true barrel, but adapted to be exposed beyond the outer end thereof upon longitudinal movement ot said member relative to said false'and' true barrels, and means upon said positioning member i`or'obstructing the outer end of said true barrel to prevent the passage eta projectile thereinto from said positioning` member.

l0. ln an air gun, the combination `with a Yfalse barrel, ofv a true barrel longitudinally movable therevvithin, a guide within the outer end of said false barrel for the outer end of said true barrehsaid guide having an aperture normally covered by said true barrel but adapted to be exposedbeyond its outer end, and said guide being rotatable relative to said lfalse barrel aswell as mov'- able longitudinally thereof, to expose its aperture, and means connecting said false barrel and 'guide for normally holding said guide ina predetermined-position relative to said false barrel.

ll. In an air gun, the combination with a compression chamber, ot a plunger slidable therewith, and a true barrel secured to said plunger and provided with an aperture near its inner end for the passage of the air compressed in said chamber and having a second aperture in advance of the aperture aforesaid, for the insertion ot the projectile into the true barrel.

l2. In an air gun, the combination With a compression chamber having an abutment, of a plunger slidable Within said chamber and movable toward said abutment to compress air, a true barrel slidably-engaging said abutment and secured to said plunger, said true barrel being provided with an aperture adapted for the passage of compressed air and having a second aperture adapted for the insertion of a projectile into said true barrel, and longitudinally movable means adapted to engage the projectile after its insertion for holding said projectile in a predetermined position.

13. In an air gun, the combination with a compression chamber having an abutment, of a plunger slidable Within said chamber and movable toward said abutment to compress air, a true barrel slidably engaging said abutment and secured to said plunger,

said vtruebarrel' being provided with an aperture nearits inner end adapted for the passage of compressed air, and having a second aperture adapted for they insertion of a, projectile into saidtrue barrel', a yieldablef member "adapted-to engageuthe pro# jectile after its .insertion for holding said' 4projectile in a predetermined position, andy meanscarriedv by saidv yieldable member adapted toengage said abutment to compress' said yieldable vmember in one position of saidl plunger. p i y 14.3In an air gun, the combination with a falsebarrel yand a true barrel longitudinally 'slidably mounted therevvithin, of a guide for the forward end oit said true bar- '-relf, said false barrel having a slot formed thereimanol a pin carried by said guide and engaging .said slot, said guide being movable relativiert@ said' false and true barrels,

saidl pinvnormally constituting a gun sight.

15.1n an air gun,the combination With afalse barrel and atrue barrel` longitudinally slidably mounted 'therevvithim of a guide forthe forward end of said true barrel,'sad false barrel having a slot formed therein providedwith a transverse portion, a pin carried' by said guide and lengaging said slot,l saidy guide being movable relative tog' Said false and true barrels,4 and spring means normallyuretaining saidpin in en-.

gagement with the transverse 'portion of i said; slot. n v

'16. In' an air gun, the combination with' a com-pression chamber havmg'an abutment,

of a plunger. slidabl'e Within said chamber and movable'toward said abutment to compress air a true barrel slidablyengaging vsaid abutment yand secured to said plunger,

said true barrel being providedmvvith an vaigierture adapted lfor the passage yof come lpressed yair and having a-second aperture adapted for the insertion of. aprojectile in- ,toy said true barrel, an annular Vshoulder passage of compressed air andl having'a second aperture' adapted for the insertion oi a projectile intosai'd-truebarrel, and a yield'able member adapted toyengage, the

projectile after its insertion for holding the g same in Y a predetermined position, said yieldable member having a port1onengageable with said abutment tol-compress said yieldable member -in one position of said y plunger. v

In testimony vvvhereof I aiX signature.

naar vv. ruuonns. 

